Some form of preliminary reduction of the angle of view is required before taking a photograph which includes a field of 180°. A highly divergent meniscus lens, designed by Mr Robin Hill, is used for this purpose. The different forms of distortion, one of which is necessary to project an angle of view of 180° upon a flat surface, are discussed and previous attempts to reproduce the field of view as seen by a fish are outlined. The method of reproducing normal photographs from small portions of the complete photographs is described.